Home / 12,105,209.80-18,157,814.70-9,235,428.40

Finding the Fourth Proportional to 12,105,209.80, 18,157,814.70 and 9,235,428.40

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Solution

The fourth proportional to 12,105,209.80, 18,157,814.70 and 9,235,428.40 is: 13,853,142.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,105,209.80 : 18,157,814.70 = 9,235,428.40 : x
  2. Step 2: Convert to fraction form
    12,105,209.80/18,157,814.70 = 9,235,428.40/x
  3. Step 3: Cross multiply
    12,105,209.80x = 18,157,814.70 × 9,235,428.40
  4. Step 4: Simplify right side
    12,105,209.80x = 167,695,197,562,317.47
  5. Step 5: Solve for x
    x = 167,695,197,562,317.47/12,105,209.80
  6. Step 6: Final answer
    x = 13,853,142.60

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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.